Drilling holes in the cranium dates back thousands of years

skull

Some 900 years ago, a Peruvian healer used a hand drill to make dozens of small holes in a patient’s skull. (Credit: Danielle Kurin)

Cranial surgery is tricky business, even under 21st-century conditions (think aseptic environment, specialized surgical instruments and copious amounts of pain medication both during and afterward). However, evidence shows that healers in Peru practiced trepanation — a surgical procedure that involves removing a section of the cranial vault using a hand drill or a scraping tool — more than 1,000 years ago to treat a variety of ailments, from head injuries to heartsickness. And they did so without the benefit of the aforementioned medical advances.

Excavating burial caves in the south-central Andean province of Andahuaylas in Peru, UC Santa Barbara bioarchaeologist Danielle Kurin and her research team unearthed the remains of 32 individuals that date back to the Late Intermediate Period (ca. AD 1000-1250). Among them, 45 separate trepanation procedures were in evidence. Kurin’s findings appear in the current issue of the American Journal of Physical Anthropology.

“When you get a knock on the head that causes your brain to swell dangerously, or you have some kind of neurological, spiritual or psychosomatic illness, drilling a hole in the head becomes a reasonable thing to do,” said Kurin, a visiting assistant professor in the Department of Anthropology at UCSB and a specialist in forensic anthropology.

According to Kurin, trepanations first appeared in the south-central Andean highlands during the Early Intermediate Period (ca. AD 200-600), although the technique was not universally practiced. Still, it was considered a viable medical procedure until the Spanish put the kibosh on the practice in the early 16th century.

But Kurin wanted to know how trepanation came to exist in the first place. And she looked to a failed empire to find some answers. Read more Ancient cranial surgery

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